March 2004 - Salt River Project (SRP), a public utility that provides electricity service to 820,000 customers in the Phoenix metropolitan area, announced that it is adding geothermal energy to the resource mix of its EarthWise Energy green power product. Under a five-year agreement, SRP will purchase 25 MW of geothermal power from plants operating in California's Imperial Valley, which will provide enough power to meet the annual electricity needs of 3,500 residential customers. Currently, more than 4,500 SRP residential customers participate in the green pricing program, through which they purchase 100-kilowatt-hour blocks of renewable energy for an additional $3.00 per month or 3¢/kWh.